Enhanced thermoelectric performance of n-type PbTe doped with Na2Te

Fong Ren Sie, Hsin Jung Liu, Chia Hung Kuo, Chii-Shyang Hwang, Ya Wen Chou, Chien Hsuan Yeh

研究成果: Article

5 引文 (Scopus)

摘要

The n-type PbTe doped with Na2Te (0.5–1.5 mol%) powders was prepared via planetary ball milling and then compacted via hot-pressed sintering at 773 K and 50 MPa. The effect of Na2Te on the thermoelectric performance of PbTe was investigated. The results demonstrated that Na2Te doping not only increased the lattice parameter, but also transformed the conduction type from p- to n-type. Moreover, Na+ was located at the interstitial sites of PbTe and generated excess electrons, increasing carrier concentration and electrical conductivity. The enhancement in the power factor of PbTe doped with Na2Te samples was due to the higher Seebeck coefficient and electrical conductivity at a high measurement temperature. A maximum ZT value of 0.81 at 700 K was obtained for n-type PbTe doped with 1 mol% Na2Te due primarily to a significant increase in the power factor and a reduction in thermal conductivity.

原文English
頁(從 - 到)113-118
頁數6
期刊Intermetallics
92
DOIs
出版狀態Published - 2018 一月 1

指紋

Seebeck coefficient
Ball milling
Temperature measurement
Powders
Lattice constants
Carrier concentration
Thermal conductivity
Sintering
Doping (additives)
Electrons
Electric Conductivity

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

引用此文

Sie, F. R., Liu, H. J., Kuo, C. H., Hwang, C-S., Chou, Y. W., & Yeh, C. H. (2018). Enhanced thermoelectric performance of n-type PbTe doped with Na2Te. Intermetallics, 92, 113-118. https://doi.org/10.1016/j.intermet.2017.09.018
Sie, Fong Ren ; Liu, Hsin Jung ; Kuo, Chia Hung ; Hwang, Chii-Shyang ; Chou, Ya Wen ; Yeh, Chien Hsuan. / Enhanced thermoelectric performance of n-type PbTe doped with Na2Te. 於: Intermetallics. 2018 ; 卷 92. 頁 113-118.
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abstract = "The n-type PbTe doped with Na2Te (0.5–1.5 mol{\%}) powders was prepared via planetary ball milling and then compacted via hot-pressed sintering at 773 K and 50 MPa. The effect of Na2Te on the thermoelectric performance of PbTe was investigated. The results demonstrated that Na2Te doping not only increased the lattice parameter, but also transformed the conduction type from p- to n-type. Moreover, Na+ was located at the interstitial sites of PbTe and generated excess electrons, increasing carrier concentration and electrical conductivity. The enhancement in the power factor of PbTe doped with Na2Te samples was due to the higher Seebeck coefficient and electrical conductivity at a high measurement temperature. A maximum ZT value of 0.81 at 700 K was obtained for n-type PbTe doped with 1 mol{\%} Na2Te due primarily to a significant increase in the power factor and a reduction in thermal conductivity.",
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Sie, FR, Liu, HJ, Kuo, CH, Hwang, C-S, Chou, YW & Yeh, CH 2018, 'Enhanced thermoelectric performance of n-type PbTe doped with Na2Te', Intermetallics, 卷 92, 頁 113-118. https://doi.org/10.1016/j.intermet.2017.09.018

Enhanced thermoelectric performance of n-type PbTe doped with Na2Te. / Sie, Fong Ren; Liu, Hsin Jung; Kuo, Chia Hung; Hwang, Chii-Shyang; Chou, Ya Wen; Yeh, Chien Hsuan.

於: Intermetallics, 卷 92, 01.01.2018, p. 113-118.

研究成果: Article

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AU - Chou, Ya Wen

AU - Yeh, Chien Hsuan

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N2 - The n-type PbTe doped with Na2Te (0.5–1.5 mol%) powders was prepared via planetary ball milling and then compacted via hot-pressed sintering at 773 K and 50 MPa. The effect of Na2Te on the thermoelectric performance of PbTe was investigated. The results demonstrated that Na2Te doping not only increased the lattice parameter, but also transformed the conduction type from p- to n-type. Moreover, Na+ was located at the interstitial sites of PbTe and generated excess electrons, increasing carrier concentration and electrical conductivity. The enhancement in the power factor of PbTe doped with Na2Te samples was due to the higher Seebeck coefficient and electrical conductivity at a high measurement temperature. A maximum ZT value of 0.81 at 700 K was obtained for n-type PbTe doped with 1 mol% Na2Te due primarily to a significant increase in the power factor and a reduction in thermal conductivity.

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